Home / 127,735.92-191,406.78-80,890.38

Finding the Fourth Proportional to 127,735.92, 191,406.78 and 80,890.38

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Solution

The fourth proportional to 127,735.92, 191,406.78 and 80,890.38 is: 121,210.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,735.92 : 191,406.78 = 80,890.38 : x
  2. Step 2: Convert to fraction form
    127,735.92/191,406.78 = 80,890.38/x
  3. Step 3: Cross multiply
    127,735.92x = 191,406.78 × 80,890.38
  4. Step 4: Simplify right side
    127,735.92x = 15,482,967,168.78
  5. Step 5: Solve for x
    x = 15,482,967,168.78/127,735.92
  6. Step 6: Final answer
    x = 121,210.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.